This is one of a number of very-light private jet aircraft offered on the world market and is a seven-seat composite design with a single Williams FJ33-4 turbofan mounted above the cabin and exhausting between the V-shaped tail.

In the late 1920s de Havilland was working towards the development of a light-four-cylinder in-line engine for aviation use and in 1931 designed a new variant of the upright Gipsy III engine which ran inverted